Etexts:
- Multi-format (HTML, EPUB, Kindle, Text) at Project Gutenberg
Available at Amazon.com:
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- Hardcover edition, also includes Roughing It (Library of America, 1984, 1027 pg).
- Paperback edition (Dover Pubns, 2003, 652 pg).
- Audio Cassette edition, unabridged (Audio Book Contractors, 2001).
All links verified on or after February 12, 2020